Maxthon 3.2.1.1200 Beta

# New Feature:
* MaxSnap: Added printer colors with white. Supported arrow keys to select screenshot area. Supported to adjust the selected area size with Ctrl+arrow keys.
# Improvements:
* Updated Webkit Core with enhancing the stability and compatibility of the core features.
* Updated Maxthon Thunder Downloader module.
* Enhanced the compatibility of Magic Fill to support more page types.
# Fixes:
* Main Frame
- Failed to remember the browser switching mode for intranet websites.
* Webkit Core
- It would download the image next to the text when selected the text by Ctrl+Left Click.
- Failed to select the correct words with special diacritics by double left click.
- Failed to get the file list when visited FTP pages.
* Quick Access
- Failed to get the thumbnail after adding one website.
* Download
- Crash problem when downloaded the attachment of QQ Mail.
* Source Sniffer
- Classification problem.